Railroad crossings can come upon a motorist unexpectedly. Well-placed signage can help avoid accidents. This railroad crossing stencil is made from reusable polyethylene plastic in your choice of 1/16-inch thick or 1/8-inch thick thickness. It's used twice to create a large 20 foot long "X" that indicates an approaching crossing. Use this stencil to comply with Department of Transportation (D.O.T.) requirements.